Pith Number

pith:A4VZNH3Q

pith:2022:A4VZNH3QOEXNTM23KCCCXT4L76

not attested not anchored not stored refs pending

A simple proof of the Baillon-Haddad theorem on open subsets of Hilbert spaces

Daniel Wachsmuth, Gerd Wachsmuth

arxiv:2204.00282 v1 · 2022-04-01 · math.FA · math.OC

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{A4VZNH3QOEXNTM23KCCCXT4L76}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more · Embed verified badge

Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

✓ Portable graph bundle live · download bundle · merged state

The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Cited by

1 paper in Pith

Mirror Descent on Reproducing Kernel Banach Spaces

Receipt and verification

First computed	2026-07-05T04:10:45.292330Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

072b969f70712ed9b35b50842bcf8bff94adc494d45760fbe1d3ebbaa3104909

Aliases

arxiv: 2204.00282 · arxiv_version: 2204.00282v1 · doi: 10.48550/arxiv.2204.00282 · pith_short_12: A4VZNH3QOEXN · pith_short_16: A4VZNH3QOEXNTM23 · pith_short_8: A4VZNH3Q

Agent API

Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/A4VZNH3QOEXNTM23KCCCXT4L76 \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: 072b969f70712ed9b35b50842bcf8bff94adc494d45760fbe1d3ebbaa3104909

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "331b05a6968188cf53f809f102d37359089b690615ed8f8f51d429f3c5a95b76",
    "cross_cats_sorted": [
      "math.OC"
    ],
    "license": "http://creativecommons.org/licenses/by-sa/4.0/",
    "primary_cat": "math.FA",
    "submitted_at": "2022-04-01T08:31:51Z",
    "title_canon_sha256": "2d4eb0e7ba4450a587a2e16b6e0964cb2ef2d1a2d9ef163f4cf56c4f1db310dd"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2204.00282",
    "kind": "arxiv",
    "version": 1
  }
}